Patent US2695064A successfully refreshed from Google Patents.
US2695064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1949-08-01
•
Granted: 1954-11-23
•
Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Ragan
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:44
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06; E21B23/065
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2233930A
Cited
US2189937A
Cited
US2189697A
Cited
US2194331A
Cited
US2275935A
Cited
US2330265A
Cited
US2373006A
Cited
US2467801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |